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Factor them both.

1 x 5 = 5

1 x 7 = 7

Discard the common factor (1) and combine the remaining ones

5 x 7 = 35

35 is the lowest (least) number that both 5 and 7 will go into evenly.

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12y ago
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10y ago

It is the smallest number that can be divided by both 5 and 7.

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Q: Why is the least common multiple of 7 and 5 35?
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